Alexa is curious about what lies beyond the massive ramparts that surround the city and the walled roads that link Bridewell to nearby towns; soon after town leader Thomas Warvold passes away, Alexa finds herself outside the walls, acquires a stone with remarkable powers, and discovers that she's meant to stop a potential war from occurring.[Author notes in a video blog at http://www.patrickcarman.com/wp-conte..., about the series reading order that the books in the original trilogy (The Dark Divide #1, Beyond The Valley of Thorns #2 and The Tenth City #3) should be read in that order and that Stargazer #4 read after the original trilogy. Otherwise is up to reader preference. Into The Mist, is a chronological prequel to the trilogy, but the story is told by characters on the boat where The Tenth City left off; it can be read before or after the original trilogy.]